• 제목/요약/키워드: Heteroannulation

검색결과 5건 처리시간 0.018초

Synthesis of Pyrrolo[2,3-b]quinolines by Palladium-catalyzed Heteroannulation

  • Gee, Moon-Bae;Lee, Won-Jung;Yum, Eul-Kgun
    • Bulletin of the Korean Chemical Society
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    • 제24권8호
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    • pp.1193-1196
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    • 2003
  • Palladium-catalyzed heteroannulation of 2-amino-3-iodoquinoline derivatives and 1-trimethylsilyl internal alkynes provided highly regioselective pyrrolo[2,3-b]quinolines with trimethylsilyl group next to the nitrogen atom in the pyrrole ring.

Synthesis of 2-Substituted Benzofurans from o-Iodophenols and Terminal Alkynes with a Recyclable Palladium Catalyst Supported on Nano-sized Carbon Balls under Copper- and Ligand-Free Conditions

  • Yum, Eul Kgun;Yang, Ok-Kyung;Kim, Ji-Eun;Park, Hee Jung
    • Bulletin of the Korean Chemical Society
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    • 제34권9호
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    • pp.2645-2649
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    • 2013
  • We have developed a one-step synthesis of benzofurans from o-iodophenol and various terminal alkynes, by using Pd catalyst supported on nano-sized carbon balls (NCB) under copper- and ligand free conditions. This recyclable catalyst could be reused more than 5 times in the same heteroannulation reaction. The results have demonstrated that diverse 2-substituted benzofurans with tolerant functional groups can be prepared simply and conveniently under these conditions.